A chemist dissolves of pure NaCl in water to prepare a solution that is NaCl by mass

MATHEMATICS · Subjective · CBSE · Mathematics · Fractions in Disguise · Fractions in Disguise

Problem

A chemist dissolves

20.0\,\text{g}

of pure NaCl in water to prepare a solution that is

5.0\%

NaCl by mass. Calculate the mass of water that must be added.